binutils-gdb/gas/doc/c-sh64.texi

208 lines
6.7 KiB
Plaintext
Raw Normal View History

Contribute sh64-elf. 2002-02-08 Alexandre Oliva <aoliva@redhat.com> Stephen Clarke <Stephen.Clarke@st.com> * doc/c-sh64.texi: Fix citation of SH64 architecture manual. 2002-01-31 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh.c (md_relax_table): Added default sizes for non-PC-relative UNDEF_MOVI, and relaxation sequences for MOVI_16, MOVI_32 and MOVI_48. * config/tc-sh64.c (shmedia_md_apply_fix3): Fix warning. (shmedia_md_convert_frag): Handle non-PC-relative UNDEF_MOVI and MOVI_16. (shmedia_md_estimate_size_before_relax): Remove redundant blocks. Set fragP->fr_var even if relaxation type unchanged. Retain UNDEF_MOVI until expression decays to number. 2002-01-24 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh64.c (shmedia_init_reloc): Handle new SHmedia PIC relocation types. Take fixP->fx_addnumber into account too. (shmedia_md_apply_fix): Likewise. (shmedia_md_convert_frag): Likewise. (shmedia_build_Mytes): Likewise. (sh64_consume_datalabel): Complain about nested datalabel. Support PIC relocs. Call sh_parse_name. * config/tc-sh64.h (TC_RELOC_RTSYM_LOC_FIXUP): Extend definition in tc-sh.h to SHmedia reloc types. * config/tc-sh.c (SH64PCRELPLT, MOVI_PLT, MOVI_GOTOFF, MOVI_GOTPC): New relaxation constants. (md_relax_table): Introduce relaxation directives for PIC-related constants. (sh_PIC_related_p): Handle datalabel. (sh_check_fixup): Choose SH5 PIC relocations. (sh_cons_fix_new): Added BDF_RELOC_64. (md_apply_fix3, sh_parse_name): Handle GOTPLT. 2002-01-18 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh64.c (sh64_max_mem_for_rs_align_code): If the current ISA is SHmedia, get 7 bytes. 2001-11-28 Nick Clifton <nickc@cambridge.redhat.com> * config/tc-sh.c (md_apply_fix3): Treat shmedia_md_apply_fix3 as a void function. * config/tc-sh64.c (shmedia_apply_fix): Rename to shmedia_apply_fix3 and make void. 2001-05-17 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh64.c (s_sh64_abi): Remove unused arguments passed to as_bad. 2001-04-12 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh64.h (md_parse_name): Take &c as argument. 2001-03-14 DJ Delorie <dj@redhat.com> * doc/Makefile.am (CPU_DOCS): Added c-sh64.texi * doc/Makefile.in(CPU_DOCS): Ditto. * doc/c-sh64.texi: New file. * doc/as.texinfo: Add SH64 support. 2001-03-13 DJ Delorie <dj@redhat.com> * config/tc-sh64.c (shmedia_get_operands): Rename A_RESV_Fx to A_REUSE_PREV so that its purpose is more obvious. (shmedia_build_Mytes): Ditto. 2001-03-07 DJ Delorie <dj@redhat.com> * config/tc-sh64.c (sh64_vtable_entry): New, strip datalabels before processing. (sh64_vtable_inherit): Ditto. (strip_datalabels): New, strip "datalabel" from given line. * config/tc-sh.c (md_pseudo_table): Add sh64-specific vtable pseudos. 2001-03-06 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_assemble): Move dwarf2_emit_insn call ... (shmedia_build_Mytes): ... to here. 2001-03-06 DJ Delorie <dj@redhat.com> * config/tc-sh.c: Remove sh64-specific uaquad now that there is a generic one. 2001-01-21 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.h (DWARF2_LINE_MIN_INSN_LENGTH): Override. * config/tc-sh64.c (shmedia_md_assemble): Offset recorded insn address by one in call to dwarf2_emit_insn. 2001-01-13 Hans-Peter Nilsson <hpn@cygnus.com> Implement ".abi" pseudo and correct .cranges descriptors. Correct alignment handling broken by imported changes. * config/tc-sh64.h (HANDLE_ALIGN): Override definition in tc-sh.h. (sh64_handle_align): Declare. (MAX_MEM_FOR_RS_ALIGN_CODE): Override definition in tc-sh.h. (sh64_max_mem_for_rs_align_code): Declare. (enum sh64_isa_values): Moved here from tc-sh64.c. (md_do_align): Define. (sh64_do_align): Declare. (struct sh64_tc_frag_data): New. (TC_FRAG_TYPE): Change to struct sh64_tc_frag_data. Users changed. (TC_FRAG_INIT): Change to set new datatype. (struct sh64_segment_info_type): Rename member last_flushed_location to last_contents_mark. All users changed. (md_elf_section_change_hook, TC_CONS_FIX_NEW): Do not define. (shmedia_elf_new_section, sh64_tc_cons_fix_new): Do not prototype. * config/tc-sh.c (md_pseudo_table): Add ".abi". (sh_elf_cons) [HAVE_SH64]: Call sh64_update_contents_mark instead of unsetting seen_insn. (md_assemble) [HAVE_SH64] <before new SHcompact sequence>: Also call sh64_update_contents_mark. (sh_handle_align): Remove HAVE_SH64-conditioned code. * config/tc-sh64.c (sh64_isa_mode): Correct type from boolean to enum sh64_isa_values. (sh64_set_contents_type): Drop segT parameter. All callers changed. (emitting_crange): Boolean guard moved to file scope from function scope in sh64_set_contents_type. (s_sh64_abi): New. (sh64_update_contents_mark): New; most split out from sh64_flush_pending_output. (shmedia_md_end): Call sh64_update_contents_mark. Set sh64_isa_mode to sh64_isa_sh5_guard unless sh64_isa_unspecified. (sh64_do_align): New function. (sh64_max_mem_for_rs_align_code): New function. (sh64_handle_align): Rename from shmedia_do_align. Make non-static. Add head comment. Emit zero bytes for n bytes modulo four. Change return-type to void. (shmedia_elf_new_section): Remove. (shmedia_md_assemble): Call sh64_update_contents_mark. (s_sh64_mode): Ditto. Do not call md_flush_pending_output. Make new frag. Call sh64_update_contents_mark after making the new frag. (sh64_flush_pending_output): Just call sh64_update_contents_mark and sh_flush_pending_output. (sh64_flag_output): Also call md_flush_pending_output, but add condition on not emitting_crange. (sh64_tc_cons_fix_new): Remove. 2001-01-12 Nick Clifton <nickc@redhat.com> * config/tc-sh64.c (shmedia_do_align): Fix to work with new alignment handling scheme imported from sourceware. 2001-01-12 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.h (TARGET_FORMAT): Define. (sh64_target_format): Prototype. * config/tc-sh64.c (sh64_target_mach): New function. 2001-01-07 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_end): When equating a symbol, use zero_address_frag instead of copying the frag of the symbol. (shmedia_frob_file_before_adjust): Ditto. (shmedia_md_apply_fix) <case BFD_RELOC_SH_IMM_MEDLOW16>: Cast mask to valueT to remove signedness. (shmedia_md_convert_frag): Add parameter final. Rename parameter headers to output_bfd. Do not evaluate symbols if final is false; do emit fixups. (shmedia_md_estimate_size_before_relax) <case C (MOVI_IMM_32, UNDEF_MOVI) et al>: If symbol cannot be modified to be PC-relative to the current frag, call shmedia_md_convert_frag to emit fixups and make frag_wane neutralize the frag. Update comments. * config/tc-sh.c (md_convert_frag): Change caller of shmedia_md_convert_frag. 2001-01-06 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.h: Tweak comments and correct formatting. * config/tc-sh64.c: Ditto. (shmedia_md_convert_frag) <PT/PTA/PTB 32, 48 and 64 bit expansion, MOVI pcrel expansion>: Fix thinko calculating offset for the no-relocation case. (shmedia_check_limits): Fix range check being off-by-one for PTA. * config/tc-sh.c: Ditto. Add proper comments to #ifdef/#ifndef wrappers. (SH64PCREL16_F): Increment for proper max-PTA handling. Update comment. (SH64PCREL16_M, MOVI_16_M): Correct range thinko. (SH64PCREL48_M, MOVI_48_M): Similar; don't count in length of expansion. (SH64PCREL32_M, MOVI_32_M): Ditto; handle overflowing expression. Correct comment. 2001-01-05 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_apply_fix) <second switch, case BFD_RELOC_SH_PT_16>: Set lowest bit in field to be relocated to 1. (shmedia_md_convert_frag) <case C (SH64PCREL16_32, SH64PCREL16) et al>: Set lowest bit of field to relocate to 1 and rest to empty, if reloc is emitted. 2000-12-31 Hans-Peter Nilsson <hpn@cygnus.com> New options plus bugfixes. * config/tc-sh.c (md_longopts): New options "-no-expand" and "-expand-pt32". (md_parse_option): Handle new options. (md_show_usage): Add blurb for new options. * config/tc-sh64.c (SHMEDIA_BFD_RELOC_PT): New macro. (sh64_expand, sh64_pt32): New variables. (shmedia_init_reloc): Handle BFD_RELOC_SH_PT_16. (shmedia_md_apply_fix): Hold original fixP->fx_r_type in orig_fx_r_type. Change SHMEDIA_BFD_RELOC_PT into BFD_RELOC_SH_PT_16. Handle BFD_RELOC_SH_PT_16 as pc-relative. <resolved previously-pc-relative relocs>: Handle SHMEDIA_BFD_RELOC_PT and BFD_RELOC_SH_PT_16. (shmedia_md_convert_frag) <case C (SH64PCREL16PT_64, SH64PCREL16), case C (SH64PCREL16PT_32, SH64PCREL16)>: Modify to PTB if operand points to SHcompact code. <case C (SH64PCREL16_32, SH64PCREL16), case C (SH64PCREL16_64, SH64PCREL16)>: Check that ISA of what operand points at and PTA/PTB matches, or emit error. (shmedia_check_limits): Handle BFD_RELOC_SH_PT_16 and SHMEDIA_BFD_RELOC_PT. (shmedia_immediate_op): If pcrel, emit fixup also for constant operand. (shmedia_build_Mytes) <case A_IMMS16>: Also check sh64_expand in condition for MOVI expansion. <case A_PCIMMS16BY4>: Handle expansion to 32 bits only, if sh64_pt32. Emit only a BFD_RELOC_SH_PT_16 fixup if not sh64_expand. <case A_PCIMMS16BY4_PT>: Likewise, but emit a SHMEDIA_BFD_RELOC_PT fixup. (sh64_target_format): Error-check setting of sh64_pt32 and sh64_expand. Fix typo in check for sh64_shcompact_const_crange. (shmedia_md_pcrel_from_section): Handle BFD_RELOC_SH_PT_16 and SHMEDIA_BFD_RELOC_PT as coming from SHmedia code. 2000-12-31 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c: Improve comments. (shmedia_md_convert_frag): Remove inactive is_pt_variant code. Do not say the linker will check correctness of PTA/PTB expansion. (shmedia_md_end): Make non-static. * config/tc-sh64.h (md_end): Define to shmedia_md_end. Add prototype. * config/tc-sh.c (sh_finalize): Remove. * config/tc-sh.h (md_end): Do not define. Remove prototype for sh_finalize. 2000-12-30 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_frob_section_type): Use a struct sh64_section_data container when storing section type in tdata field in elf_section_data. * config/tc-sh.c (sh_elf_final_processing): Change from EF_SH64 to EF_SH5. * Makefile.am: Update dependencies. * Makefile.in: Regenerate. 2000-12-22 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_assemble): Don't protect dwarf2_emit_insn call with test on debug_type. 2000-12-19 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (sh64_set_contents_type): Make contents-type CRT_SH5_ISA32 sticky for 64-bit. 2000-12-18 Hans-Peter Nilsson <hpn@cygnus.com> Generate .crange sections when switching ISA mode or emitting constants in same section as code. * config/tc-sh64.c: Reformat structure definitions. (sh64_end_of_assembly, sh64_mix, sh64_shcompact_const_crange): New variables. (sh64_set_contents_type): Rename from sh64_init_section. Rewrite to emit a .cranges descriptor when contents type changes. Only emit error if changing contents type and -no-mix is in effect. (sh64_emit_crange, sh64_flush_last_crange, sh64_flag_output, sh64_flush_pending_output, sh64_tc_cons_fix_new): New functions. (shmedia_md_end): Set sh64_end_of_assembly. Pass sh64_flush_last_crange over sections. When checking main symbol of datalabel symbol, check for STO_SH5_ISA32, not ISA type of section in definition. (shmedia_frob_file_before_adjust): Check main symbol for STO_SH5_ISA32; don't check ISA type of section in definition. (shmedia_frob_section_type): Adjust for .cranges; set section flag to SHF_SH5_ISA32_MIXED or SHF_SH5_ISA32 according to whether .cranges entries have been output. (shmedia_elf_new_section): Just call md_flush_pending_output. (shmedia_md_assemble): Do not emit a BFD_RELOC_SH_SHMEDIA_CODE fix. Do not set tc_segment_info_data.in_code for section. Call sh64_set_contents_type for SHmedia code. (s_sh64_mode): Do not call sh64_init_section or set seen_insn to false. Call md_flush_pending_output. (sh64_target_format): Check that -no-mix and -shcompact-const-crange are used in sane combination with other options. (shmedia_md_pcrel_from_section): Check type of fix for how to adjust pc-relative. (sh64_consume_datalabel): Check symbol for having STO_SH5_ISA32, not ISA type of section in definition. * config/tc-sh64.h (struct sh64_segment_info_type): Rewrite to hold contents-type state. (md_flush_pending_output): Redefine to sh64_flush_pending_output. (sh64_flush_pending_output): Declare. (TC_CONS_FIX_NEW): Define to sh64_tc_cons_fix_new. (sh64_tc_cons_fix_new): Declare. * config/tc-sh.c (sh_elf_cons) [HAVE_SH64]: Unset seen_insn and call sh64_flag_output. (md_assemble) [HAVE_SH64]: Do not emit BFD_RELOC_SH_CODE. Just call sh64_set_contents_type to mark SHcompact code and set seen_insn. (md_longopts): New options "-no-mix" and "-shcompact-const-crange". (md_parse_option): Handle new options. (md_show_usage): Add blurb for new options. (md_number_to_chars) [HAVE_SH64]: Call sh64_flag_output. 2000-12-15 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c: Delete investigated and obsolete fixme:s. (sh64_last_insn_frag): New. (shmedia_md_convert_frag): Use tc_frag_data field of incoming frag to get frag for insn opcode for generating fixups; do not assume it is the same frag. (shmedia_build_Mytes): Set sh64_last_insn_frag after growing frag for new insn. * config/tc-sh64.h (ELF_TC_SPECIAL_SECTIONS): Define for .cranges section. (TC_FRAG_TYPE): Define as fragS *. (TC_FRAG_INIT): Define to set tc_frag_data to sh64_last_insn_frag. (sh64_last_insn_frag): Declare. (sh64_consume_datalabel): Fix typo; check for seginfo != NULL, not == NULL before dereferencing. 2000-12-12 Hans-Peter Nilsson <hpn@cygnus.com> Get rid of BFD section flag and EF_SH64_ABI64. * config/tc-sh64.c (shmedia_frob_section_type): Use elf_section_data (sec)->tdata, not a specific BFD section flag, to communicate the section as containing SHmedia code. Describe why. * config/tc-sh.c (sh_elf_final_processing): Tweak comment. Set EF_SH64 regardless of ABI. * config/tc-sh64.c (shmedia_md_apply_fix): Decapitalize "invalid" in error message. Handle resolved expressions for BFD_RELOC_SH_IMMS10, BFD_RELOC_SH_IMMS10BY2, BFD_RELOC_SH_IMMS10BY4 and BFD_RELOC_64. (shmedia_check_limits): Handle BFD_RELOC_64. (sh64_adjust_symtab): Do not decrement the GAS symbol value for a STO_SH5_ISA32 symbol, only the BFD value. 2000-12-11 Ben Elliston <bje@redhat.com> * config/tc-sh64.c: Call dwarf2_emit_insn, not the defunct dwarf2_generate_asm_lineno. 2000-12-11 Hans-Peter Nilsson <hpn@cygnus.com> Handle PC-relative MOVI expansions with assembler relaxation. Generate PC-relative relocs from 16-bit PC-relative expressions. * config/tc-sh64.c (SHMEDIA_MD_PCREL_FROM_FIX): Break out from... (shmedia_md_pcrel_from_section): ...here. (shmedia_md_apply_fix): Handle fixups for 16-bit operands that has turned completely resolved. Adjust relocation type for 16-bit immediate operands that has turned PC-relative. Adjust back for MD_PCREL_FROM_SECTION being applied twice. (shmedia_md_convert_frag): Always emit reloc for expression with global or weak symbol. Handle relaxation result for PC-relative expressions. (shmedia_md_estimate_size_before_relax): An expression with a weak or global symbol can not be relaxed. Break out tests for relaxable symbol into variable sym_relaxable. <cases C (MOVI_IMM_64, UNDEF_MOVI) and C (MOVI_IMM_32, UNDEF_MOVI)>: Break out any PC-relative expression and change relaxation type. (shmedia_build_Mytes): CSE &operands->operands[j] into variable opjp. <case A_IMMS16>: Fix typo for initial minor relaxation type of MOVI expansion. If X_op_symbol of the immediate expression is set, make an expression symbol for the argument to frag_var. * config/tc-sh.c (MOVI_IMM_32_PCREL, MOVI_IMM_64_PCREL): New relaxations. (END): Adjust for new relaxations. (md_relax_table): Add entries for new relaxations. 2000-12-07 Ben Elliston <bje@redhat.com> * config/tc-sh64.c (shmedia_parse_reg): Initialize variable len. 2000-12-07 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_convert_frag): Correct all MOVI and SHORI operand offsets in PT/PTA/PTB expansions. 2000-12-05 Hans-Peter Nilsson <hpn@cygnus.com> Implement DataLabel semantics. * config/tc-sh.c (sh_frob_file) [HAVE_SH64]: Call shmedia_frob_file_before_adjust. * config/tc-sh64.c [! OBJ_ELF]: Emit #error. (DATALABEL_SUFFIX): Define. (shmedia_md_end) <before adjusting STO_SH5_ISA32 symbols>: Walk symbol list to update "datalabel" symbols to their main symbol counterparts. (shmedia_frob_file_before_adjust): New. (sh64_adjust_symtab): For remaining datalabel symbols, set to undefined and set STT_DATALABEL. (sh64_frob_label): Initialize TC symbol field. (sh64_consume_datalabel): Actually implement semantics. New parameter operandf, call it instead of expression. (sh64_exclude_symbol): New. * config/tc-sh64.h (md_parse_name): Pass on the function operand to sh64_consume_datalabel. (tc_symbol_new_hook): Define to tc_frob_symbol. (TC_SYMFIELD_TYPE): Define to symbolS *. (tc_frob_symbol): Define to call sh64_exclude_symbol. 2000-12-01 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_init_reloc): Tweak comment for default case. (shmedia_md_assemble): Call dwarf2_generate_asm_lineno if generating dwarf2 debug information. 2000-11-30 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (sh64_target_format): Use elf64-sh64l and elf64-sh64 for the 64-bit ABI. * config/tc-sh.c (md_show_usage): Tweak usage output for -abi=* option. 2000-11-29 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh.c: Remove conditionalizing on HAVE_SH64 for case-insensitivity. 2000-11-27 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c: Tweak comments, formatting and error messages. (enum sh64_abi_values): New type. (enum sh64_isa_values): New type. (sh64_isa_mode): Replace shmedia_mode. All referers changed. (seen_shcompact_mode, seen_shmedia_mode): Delete. (sh64_abi): Replace shmedia_64. (shmedia_md_convert_frag) <C (MOVI_IMM_64, MOVI_64), C (MOVI_IMM_32, MOVI_32)>: Correct register number handling. (s_sh64_mode): Check validity for this target. (sh64_target_format): Initialize defaults for ISA and ABI. Fallback to old object format if no SH64 ISA or ABI has been specified. * config/tc-sh.c (md_parse_option): Check combinations for errors. (sh_elf_final_processing): Change to have EF_SH64_ABI64 for 64-bit ABI and EF_SH64 for 32-bit ABI, if SH64 options are specified. * config/tc-sh64.h: Fix typo in comment. 2000-11-25 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_estimate_size_before_relax) <PT fixups for absolute values>: Size will be longest, not shortest. (shmedia_md_convert_frag): Disable PTB-warning machinery. Correct all MOVI and SHORI operand offsets in PT/PTA/PTB expansions. * config/tc-sh.c (parse_reg) [HAVE_SH64]: Add local variables l0 and l1 to hold lowercase of two first characters. Change all remaining TO_LOWER to tolower. * config/tc-sh64.c (TO_LOWER): Delete. (shmedia_find_cooked_opcode): Use tolower, not TO_LOWER. (md_parse_name): Define. (sh64_consume_datalabel): Declare. (DOLLAR_DOT): Define. * config/tc-sh64.c (shmedia_parse_exp): New. (sh64_consume_datalabel): New; just ignoring datalabel semantics. (shmedia_parse_reg): Remove const from src parameter. (shmedia_get_operands): Ditto for args parameter and ptr variable. (shmedia_md_assemble): Ditto for op_end variable. (shmedia_get_operand): Ditto for ptr parameter and src variable. Use shmedia_parse_exp, not parse_exp. * config/tc-sh64.c (shmedia_parse_reg): Add shmedia_arg_type parameter. All callers changed. (shmedia_get_operand): Add shmedia_arg_type parameter. All callers changed. (shmedia_parse_reg): Put first two character in local variables. Use tolower, not TO_LOWER. If no register is found and argtype indicates a control register, scan shmedia_creg_table case-insensitive. 2000-11-24 Hans-Peter Nilsson <hpn@cygnus.com> * Makefile.am (CPU_TYPES): Add sh64. (TARGET_CPU_CFILES): Add config/tc-sh64.c. (TARGET_CPU_HFILES): Add config/tc-sh64.h. Regenerate dependencies. * Makefile.in: Regenerate. * configure.in: Add support for sh64-*-elf*. * configure: Regenerate. * config/tc-sh64.h: New. * config/tc-sh64.c: New. * config/tc-sh.c (md_pseudo_table) [HAVE_SH64]: New pseudos .mode, .isa and .uaquad. [HAVE_SH64] (SH64PCREL16_32, SH64PCREL16_64, SH64PCREL16PT_32, SH64PCREL16PT_64, MOVI_IMM_32, MOVI_IMM_64): Define. [HAVE_SH64] (END): Define as 10. [HAVE_SH64] (UNDEF_SH64PCREL, SH64PCREL16, SH64PCREL32, SH64PCREL48, SH64PCREL64, UNDEF_MOVI, MOVI_16, MOVI_32, MOVI_48, MOVI_64): Define. [HAVE_SH64] (SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, SH64PCREL32_F, SH64PCREL32_M, SH64PCREL32_LENGTH, SH64PCREL48_F, SH64PCREL48_M, SH64PCREL48_LENGTH, SH64PCREL64_LENGTH, MOVI_16_LENGTH, MOVI_32_LENGTH, MOVI_48_LENGTH, MOVI_64_LENGTH): Define. (md_relax_table) [HAVE_SH64]: Provide relaxations for SHmedia. (md_begin) [HAVE_SH64]: Call shmedia_md_begin. (parse_reg) [HAVE_SH64]: Parse register names case-insensitive. (md_assemble) [HAVE_SH64]: Call shmedia_md_assemble if assembling SHmedia instructions. Handle state-change after switching to SHcompact. (md_longopts) [HAVE_SH64]: New options --isa=* and --abi=*. (md_parse_option) [HAVE_SH64]: Parse new options. (md_show_usage) [HAVE_SH64]: Show usage of new options. (md_convert_frag) [HAVE_SH64] <default>: Call shmedia_md_convert_frag instead of abort. (sh_force_relocation) [HAVE_SH64]: Also force relocation for BFD_RELOC_SH_SHMEDIA_CODE. (sh_elf_final_processing) [HAVE_SH64]: Set flags identifying SHcompact or SHmedia code. (md_apply_fix) [HAVE_SH64] <default>: Return result from calling shmedia_md_apply_fix instead of abort. (md_estimate_size_before_relax) [HAVE_SH64] <default>: Return result from calling shmedia_md_estimate_size_before_relax instead of calling abort. (sh_do_align) [HAVE_SH64]: If shmedia_mode, let shmedia_do_align do the work. (tc_gen_reloc) [HAVE_SH64]: For unrecognized relocs, call shmedia_init_reloc and do nothing more if it returns non-zero. (sh_finalize) [HAVE_SH64]: Call shmedia_md_end. * po/POTFILES.in: Regenerate. * po/gas.pot: Regenerate.
2002-02-08 14:32:23 +08:00
@c Copyright (C) 2001, 2002 Free Software Foundation, Inc.
@c This is part of the GAS manual.
@c For copying conditions, see the file as.texinfo.
@page
@node SH64-Dependent
@chapter SuperH SH64 Dependent Features
Contribute sh64-elf. 2002-02-08 Alexandre Oliva <aoliva@redhat.com> Stephen Clarke <Stephen.Clarke@st.com> * doc/c-sh64.texi: Fix citation of SH64 architecture manual. 2002-01-31 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh.c (md_relax_table): Added default sizes for non-PC-relative UNDEF_MOVI, and relaxation sequences for MOVI_16, MOVI_32 and MOVI_48. * config/tc-sh64.c (shmedia_md_apply_fix3): Fix warning. (shmedia_md_convert_frag): Handle non-PC-relative UNDEF_MOVI and MOVI_16. (shmedia_md_estimate_size_before_relax): Remove redundant blocks. Set fragP->fr_var even if relaxation type unchanged. Retain UNDEF_MOVI until expression decays to number. 2002-01-24 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh64.c (shmedia_init_reloc): Handle new SHmedia PIC relocation types. Take fixP->fx_addnumber into account too. (shmedia_md_apply_fix): Likewise. (shmedia_md_convert_frag): Likewise. (shmedia_build_Mytes): Likewise. (sh64_consume_datalabel): Complain about nested datalabel. Support PIC relocs. Call sh_parse_name. * config/tc-sh64.h (TC_RELOC_RTSYM_LOC_FIXUP): Extend definition in tc-sh.h to SHmedia reloc types. * config/tc-sh.c (SH64PCRELPLT, MOVI_PLT, MOVI_GOTOFF, MOVI_GOTPC): New relaxation constants. (md_relax_table): Introduce relaxation directives for PIC-related constants. (sh_PIC_related_p): Handle datalabel. (sh_check_fixup): Choose SH5 PIC relocations. (sh_cons_fix_new): Added BDF_RELOC_64. (md_apply_fix3, sh_parse_name): Handle GOTPLT. 2002-01-18 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh64.c (sh64_max_mem_for_rs_align_code): If the current ISA is SHmedia, get 7 bytes. 2001-11-28 Nick Clifton <nickc@cambridge.redhat.com> * config/tc-sh.c (md_apply_fix3): Treat shmedia_md_apply_fix3 as a void function. * config/tc-sh64.c (shmedia_apply_fix): Rename to shmedia_apply_fix3 and make void. 2001-05-17 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh64.c (s_sh64_abi): Remove unused arguments passed to as_bad. 2001-04-12 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh64.h (md_parse_name): Take &c as argument. 2001-03-14 DJ Delorie <dj@redhat.com> * doc/Makefile.am (CPU_DOCS): Added c-sh64.texi * doc/Makefile.in(CPU_DOCS): Ditto. * doc/c-sh64.texi: New file. * doc/as.texinfo: Add SH64 support. 2001-03-13 DJ Delorie <dj@redhat.com> * config/tc-sh64.c (shmedia_get_operands): Rename A_RESV_Fx to A_REUSE_PREV so that its purpose is more obvious. (shmedia_build_Mytes): Ditto. 2001-03-07 DJ Delorie <dj@redhat.com> * config/tc-sh64.c (sh64_vtable_entry): New, strip datalabels before processing. (sh64_vtable_inherit): Ditto. (strip_datalabels): New, strip "datalabel" from given line. * config/tc-sh.c (md_pseudo_table): Add sh64-specific vtable pseudos. 2001-03-06 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_assemble): Move dwarf2_emit_insn call ... (shmedia_build_Mytes): ... to here. 2001-03-06 DJ Delorie <dj@redhat.com> * config/tc-sh.c: Remove sh64-specific uaquad now that there is a generic one. 2001-01-21 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.h (DWARF2_LINE_MIN_INSN_LENGTH): Override. * config/tc-sh64.c (shmedia_md_assemble): Offset recorded insn address by one in call to dwarf2_emit_insn. 2001-01-13 Hans-Peter Nilsson <hpn@cygnus.com> Implement ".abi" pseudo and correct .cranges descriptors. Correct alignment handling broken by imported changes. * config/tc-sh64.h (HANDLE_ALIGN): Override definition in tc-sh.h. (sh64_handle_align): Declare. (MAX_MEM_FOR_RS_ALIGN_CODE): Override definition in tc-sh.h. (sh64_max_mem_for_rs_align_code): Declare. (enum sh64_isa_values): Moved here from tc-sh64.c. (md_do_align): Define. (sh64_do_align): Declare. (struct sh64_tc_frag_data): New. (TC_FRAG_TYPE): Change to struct sh64_tc_frag_data. Users changed. (TC_FRAG_INIT): Change to set new datatype. (struct sh64_segment_info_type): Rename member last_flushed_location to last_contents_mark. All users changed. (md_elf_section_change_hook, TC_CONS_FIX_NEW): Do not define. (shmedia_elf_new_section, sh64_tc_cons_fix_new): Do not prototype. * config/tc-sh.c (md_pseudo_table): Add ".abi". (sh_elf_cons) [HAVE_SH64]: Call sh64_update_contents_mark instead of unsetting seen_insn. (md_assemble) [HAVE_SH64] <before new SHcompact sequence>: Also call sh64_update_contents_mark. (sh_handle_align): Remove HAVE_SH64-conditioned code. * config/tc-sh64.c (sh64_isa_mode): Correct type from boolean to enum sh64_isa_values. (sh64_set_contents_type): Drop segT parameter. All callers changed. (emitting_crange): Boolean guard moved to file scope from function scope in sh64_set_contents_type. (s_sh64_abi): New. (sh64_update_contents_mark): New; most split out from sh64_flush_pending_output. (shmedia_md_end): Call sh64_update_contents_mark. Set sh64_isa_mode to sh64_isa_sh5_guard unless sh64_isa_unspecified. (sh64_do_align): New function. (sh64_max_mem_for_rs_align_code): New function. (sh64_handle_align): Rename from shmedia_do_align. Make non-static. Add head comment. Emit zero bytes for n bytes modulo four. Change return-type to void. (shmedia_elf_new_section): Remove. (shmedia_md_assemble): Call sh64_update_contents_mark. (s_sh64_mode): Ditto. Do not call md_flush_pending_output. Make new frag. Call sh64_update_contents_mark after making the new frag. (sh64_flush_pending_output): Just call sh64_update_contents_mark and sh_flush_pending_output. (sh64_flag_output): Also call md_flush_pending_output, but add condition on not emitting_crange. (sh64_tc_cons_fix_new): Remove. 2001-01-12 Nick Clifton <nickc@redhat.com> * config/tc-sh64.c (shmedia_do_align): Fix to work with new alignment handling scheme imported from sourceware. 2001-01-12 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.h (TARGET_FORMAT): Define. (sh64_target_format): Prototype. * config/tc-sh64.c (sh64_target_mach): New function. 2001-01-07 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_end): When equating a symbol, use zero_address_frag instead of copying the frag of the symbol. (shmedia_frob_file_before_adjust): Ditto. (shmedia_md_apply_fix) <case BFD_RELOC_SH_IMM_MEDLOW16>: Cast mask to valueT to remove signedness. (shmedia_md_convert_frag): Add parameter final. Rename parameter headers to output_bfd. Do not evaluate symbols if final is false; do emit fixups. (shmedia_md_estimate_size_before_relax) <case C (MOVI_IMM_32, UNDEF_MOVI) et al>: If symbol cannot be modified to be PC-relative to the current frag, call shmedia_md_convert_frag to emit fixups and make frag_wane neutralize the frag. Update comments. * config/tc-sh.c (md_convert_frag): Change caller of shmedia_md_convert_frag. 2001-01-06 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.h: Tweak comments and correct formatting. * config/tc-sh64.c: Ditto. (shmedia_md_convert_frag) <PT/PTA/PTB 32, 48 and 64 bit expansion, MOVI pcrel expansion>: Fix thinko calculating offset for the no-relocation case. (shmedia_check_limits): Fix range check being off-by-one for PTA. * config/tc-sh.c: Ditto. Add proper comments to #ifdef/#ifndef wrappers. (SH64PCREL16_F): Increment for proper max-PTA handling. Update comment. (SH64PCREL16_M, MOVI_16_M): Correct range thinko. (SH64PCREL48_M, MOVI_48_M): Similar; don't count in length of expansion. (SH64PCREL32_M, MOVI_32_M): Ditto; handle overflowing expression. Correct comment. 2001-01-05 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_apply_fix) <second switch, case BFD_RELOC_SH_PT_16>: Set lowest bit in field to be relocated to 1. (shmedia_md_convert_frag) <case C (SH64PCREL16_32, SH64PCREL16) et al>: Set lowest bit of field to relocate to 1 and rest to empty, if reloc is emitted. 2000-12-31 Hans-Peter Nilsson <hpn@cygnus.com> New options plus bugfixes. * config/tc-sh.c (md_longopts): New options "-no-expand" and "-expand-pt32". (md_parse_option): Handle new options. (md_show_usage): Add blurb for new options. * config/tc-sh64.c (SHMEDIA_BFD_RELOC_PT): New macro. (sh64_expand, sh64_pt32): New variables. (shmedia_init_reloc): Handle BFD_RELOC_SH_PT_16. (shmedia_md_apply_fix): Hold original fixP->fx_r_type in orig_fx_r_type. Change SHMEDIA_BFD_RELOC_PT into BFD_RELOC_SH_PT_16. Handle BFD_RELOC_SH_PT_16 as pc-relative. <resolved previously-pc-relative relocs>: Handle SHMEDIA_BFD_RELOC_PT and BFD_RELOC_SH_PT_16. (shmedia_md_convert_frag) <case C (SH64PCREL16PT_64, SH64PCREL16), case C (SH64PCREL16PT_32, SH64PCREL16)>: Modify to PTB if operand points to SHcompact code. <case C (SH64PCREL16_32, SH64PCREL16), case C (SH64PCREL16_64, SH64PCREL16)>: Check that ISA of what operand points at and PTA/PTB matches, or emit error. (shmedia_check_limits): Handle BFD_RELOC_SH_PT_16 and SHMEDIA_BFD_RELOC_PT. (shmedia_immediate_op): If pcrel, emit fixup also for constant operand. (shmedia_build_Mytes) <case A_IMMS16>: Also check sh64_expand in condition for MOVI expansion. <case A_PCIMMS16BY4>: Handle expansion to 32 bits only, if sh64_pt32. Emit only a BFD_RELOC_SH_PT_16 fixup if not sh64_expand. <case A_PCIMMS16BY4_PT>: Likewise, but emit a SHMEDIA_BFD_RELOC_PT fixup. (sh64_target_format): Error-check setting of sh64_pt32 and sh64_expand. Fix typo in check for sh64_shcompact_const_crange. (shmedia_md_pcrel_from_section): Handle BFD_RELOC_SH_PT_16 and SHMEDIA_BFD_RELOC_PT as coming from SHmedia code. 2000-12-31 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c: Improve comments. (shmedia_md_convert_frag): Remove inactive is_pt_variant code. Do not say the linker will check correctness of PTA/PTB expansion. (shmedia_md_end): Make non-static. * config/tc-sh64.h (md_end): Define to shmedia_md_end. Add prototype. * config/tc-sh.c (sh_finalize): Remove. * config/tc-sh.h (md_end): Do not define. Remove prototype for sh_finalize. 2000-12-30 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_frob_section_type): Use a struct sh64_section_data container when storing section type in tdata field in elf_section_data. * config/tc-sh.c (sh_elf_final_processing): Change from EF_SH64 to EF_SH5. * Makefile.am: Update dependencies. * Makefile.in: Regenerate. 2000-12-22 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_assemble): Don't protect dwarf2_emit_insn call with test on debug_type. 2000-12-19 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (sh64_set_contents_type): Make contents-type CRT_SH5_ISA32 sticky for 64-bit. 2000-12-18 Hans-Peter Nilsson <hpn@cygnus.com> Generate .crange sections when switching ISA mode or emitting constants in same section as code. * config/tc-sh64.c: Reformat structure definitions. (sh64_end_of_assembly, sh64_mix, sh64_shcompact_const_crange): New variables. (sh64_set_contents_type): Rename from sh64_init_section. Rewrite to emit a .cranges descriptor when contents type changes. Only emit error if changing contents type and -no-mix is in effect. (sh64_emit_crange, sh64_flush_last_crange, sh64_flag_output, sh64_flush_pending_output, sh64_tc_cons_fix_new): New functions. (shmedia_md_end): Set sh64_end_of_assembly. Pass sh64_flush_last_crange over sections. When checking main symbol of datalabel symbol, check for STO_SH5_ISA32, not ISA type of section in definition. (shmedia_frob_file_before_adjust): Check main symbol for STO_SH5_ISA32; don't check ISA type of section in definition. (shmedia_frob_section_type): Adjust for .cranges; set section flag to SHF_SH5_ISA32_MIXED or SHF_SH5_ISA32 according to whether .cranges entries have been output. (shmedia_elf_new_section): Just call md_flush_pending_output. (shmedia_md_assemble): Do not emit a BFD_RELOC_SH_SHMEDIA_CODE fix. Do not set tc_segment_info_data.in_code for section. Call sh64_set_contents_type for SHmedia code. (s_sh64_mode): Do not call sh64_init_section or set seen_insn to false. Call md_flush_pending_output. (sh64_target_format): Check that -no-mix and -shcompact-const-crange are used in sane combination with other options. (shmedia_md_pcrel_from_section): Check type of fix for how to adjust pc-relative. (sh64_consume_datalabel): Check symbol for having STO_SH5_ISA32, not ISA type of section in definition. * config/tc-sh64.h (struct sh64_segment_info_type): Rewrite to hold contents-type state. (md_flush_pending_output): Redefine to sh64_flush_pending_output. (sh64_flush_pending_output): Declare. (TC_CONS_FIX_NEW): Define to sh64_tc_cons_fix_new. (sh64_tc_cons_fix_new): Declare. * config/tc-sh.c (sh_elf_cons) [HAVE_SH64]: Unset seen_insn and call sh64_flag_output. (md_assemble) [HAVE_SH64]: Do not emit BFD_RELOC_SH_CODE. Just call sh64_set_contents_type to mark SHcompact code and set seen_insn. (md_longopts): New options "-no-mix" and "-shcompact-const-crange". (md_parse_option): Handle new options. (md_show_usage): Add blurb for new options. (md_number_to_chars) [HAVE_SH64]: Call sh64_flag_output. 2000-12-15 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c: Delete investigated and obsolete fixme:s. (sh64_last_insn_frag): New. (shmedia_md_convert_frag): Use tc_frag_data field of incoming frag to get frag for insn opcode for generating fixups; do not assume it is the same frag. (shmedia_build_Mytes): Set sh64_last_insn_frag after growing frag for new insn. * config/tc-sh64.h (ELF_TC_SPECIAL_SECTIONS): Define for .cranges section. (TC_FRAG_TYPE): Define as fragS *. (TC_FRAG_INIT): Define to set tc_frag_data to sh64_last_insn_frag. (sh64_last_insn_frag): Declare. (sh64_consume_datalabel): Fix typo; check for seginfo != NULL, not == NULL before dereferencing. 2000-12-12 Hans-Peter Nilsson <hpn@cygnus.com> Get rid of BFD section flag and EF_SH64_ABI64. * config/tc-sh64.c (shmedia_frob_section_type): Use elf_section_data (sec)->tdata, not a specific BFD section flag, to communicate the section as containing SHmedia code. Describe why. * config/tc-sh.c (sh_elf_final_processing): Tweak comment. Set EF_SH64 regardless of ABI. * config/tc-sh64.c (shmedia_md_apply_fix): Decapitalize "invalid" in error message. Handle resolved expressions for BFD_RELOC_SH_IMMS10, BFD_RELOC_SH_IMMS10BY2, BFD_RELOC_SH_IMMS10BY4 and BFD_RELOC_64. (shmedia_check_limits): Handle BFD_RELOC_64. (sh64_adjust_symtab): Do not decrement the GAS symbol value for a STO_SH5_ISA32 symbol, only the BFD value. 2000-12-11 Ben Elliston <bje@redhat.com> * config/tc-sh64.c: Call dwarf2_emit_insn, not the defunct dwarf2_generate_asm_lineno. 2000-12-11 Hans-Peter Nilsson <hpn@cygnus.com> Handle PC-relative MOVI expansions with assembler relaxation. Generate PC-relative relocs from 16-bit PC-relative expressions. * config/tc-sh64.c (SHMEDIA_MD_PCREL_FROM_FIX): Break out from... (shmedia_md_pcrel_from_section): ...here. (shmedia_md_apply_fix): Handle fixups for 16-bit operands that has turned completely resolved. Adjust relocation type for 16-bit immediate operands that has turned PC-relative. Adjust back for MD_PCREL_FROM_SECTION being applied twice. (shmedia_md_convert_frag): Always emit reloc for expression with global or weak symbol. Handle relaxation result for PC-relative expressions. (shmedia_md_estimate_size_before_relax): An expression with a weak or global symbol can not be relaxed. Break out tests for relaxable symbol into variable sym_relaxable. <cases C (MOVI_IMM_64, UNDEF_MOVI) and C (MOVI_IMM_32, UNDEF_MOVI)>: Break out any PC-relative expression and change relaxation type. (shmedia_build_Mytes): CSE &operands->operands[j] into variable opjp. <case A_IMMS16>: Fix typo for initial minor relaxation type of MOVI expansion. If X_op_symbol of the immediate expression is set, make an expression symbol for the argument to frag_var. * config/tc-sh.c (MOVI_IMM_32_PCREL, MOVI_IMM_64_PCREL): New relaxations. (END): Adjust for new relaxations. (md_relax_table): Add entries for new relaxations. 2000-12-07 Ben Elliston <bje@redhat.com> * config/tc-sh64.c (shmedia_parse_reg): Initialize variable len. 2000-12-07 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_convert_frag): Correct all MOVI and SHORI operand offsets in PT/PTA/PTB expansions. 2000-12-05 Hans-Peter Nilsson <hpn@cygnus.com> Implement DataLabel semantics. * config/tc-sh.c (sh_frob_file) [HAVE_SH64]: Call shmedia_frob_file_before_adjust. * config/tc-sh64.c [! OBJ_ELF]: Emit #error. (DATALABEL_SUFFIX): Define. (shmedia_md_end) <before adjusting STO_SH5_ISA32 symbols>: Walk symbol list to update "datalabel" symbols to their main symbol counterparts. (shmedia_frob_file_before_adjust): New. (sh64_adjust_symtab): For remaining datalabel symbols, set to undefined and set STT_DATALABEL. (sh64_frob_label): Initialize TC symbol field. (sh64_consume_datalabel): Actually implement semantics. New parameter operandf, call it instead of expression. (sh64_exclude_symbol): New. * config/tc-sh64.h (md_parse_name): Pass on the function operand to sh64_consume_datalabel. (tc_symbol_new_hook): Define to tc_frob_symbol. (TC_SYMFIELD_TYPE): Define to symbolS *. (tc_frob_symbol): Define to call sh64_exclude_symbol. 2000-12-01 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_init_reloc): Tweak comment for default case. (shmedia_md_assemble): Call dwarf2_generate_asm_lineno if generating dwarf2 debug information. 2000-11-30 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (sh64_target_format): Use elf64-sh64l and elf64-sh64 for the 64-bit ABI. * config/tc-sh.c (md_show_usage): Tweak usage output for -abi=* option. 2000-11-29 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh.c: Remove conditionalizing on HAVE_SH64 for case-insensitivity. 2000-11-27 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c: Tweak comments, formatting and error messages. (enum sh64_abi_values): New type. (enum sh64_isa_values): New type. (sh64_isa_mode): Replace shmedia_mode. All referers changed. (seen_shcompact_mode, seen_shmedia_mode): Delete. (sh64_abi): Replace shmedia_64. (shmedia_md_convert_frag) <C (MOVI_IMM_64, MOVI_64), C (MOVI_IMM_32, MOVI_32)>: Correct register number handling. (s_sh64_mode): Check validity for this target. (sh64_target_format): Initialize defaults for ISA and ABI. Fallback to old object format if no SH64 ISA or ABI has been specified. * config/tc-sh.c (md_parse_option): Check combinations for errors. (sh_elf_final_processing): Change to have EF_SH64_ABI64 for 64-bit ABI and EF_SH64 for 32-bit ABI, if SH64 options are specified. * config/tc-sh64.h: Fix typo in comment. 2000-11-25 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_estimate_size_before_relax) <PT fixups for absolute values>: Size will be longest, not shortest. (shmedia_md_convert_frag): Disable PTB-warning machinery. Correct all MOVI and SHORI operand offsets in PT/PTA/PTB expansions. * config/tc-sh.c (parse_reg) [HAVE_SH64]: Add local variables l0 and l1 to hold lowercase of two first characters. Change all remaining TO_LOWER to tolower. * config/tc-sh64.c (TO_LOWER): Delete. (shmedia_find_cooked_opcode): Use tolower, not TO_LOWER. (md_parse_name): Define. (sh64_consume_datalabel): Declare. (DOLLAR_DOT): Define. * config/tc-sh64.c (shmedia_parse_exp): New. (sh64_consume_datalabel): New; just ignoring datalabel semantics. (shmedia_parse_reg): Remove const from src parameter. (shmedia_get_operands): Ditto for args parameter and ptr variable. (shmedia_md_assemble): Ditto for op_end variable. (shmedia_get_operand): Ditto for ptr parameter and src variable. Use shmedia_parse_exp, not parse_exp. * config/tc-sh64.c (shmedia_parse_reg): Add shmedia_arg_type parameter. All callers changed. (shmedia_get_operand): Add shmedia_arg_type parameter. All callers changed. (shmedia_parse_reg): Put first two character in local variables. Use tolower, not TO_LOWER. If no register is found and argtype indicates a control register, scan shmedia_creg_table case-insensitive. 2000-11-24 Hans-Peter Nilsson <hpn@cygnus.com> * Makefile.am (CPU_TYPES): Add sh64. (TARGET_CPU_CFILES): Add config/tc-sh64.c. (TARGET_CPU_HFILES): Add config/tc-sh64.h. Regenerate dependencies. * Makefile.in: Regenerate. * configure.in: Add support for sh64-*-elf*. * configure: Regenerate. * config/tc-sh64.h: New. * config/tc-sh64.c: New. * config/tc-sh.c (md_pseudo_table) [HAVE_SH64]: New pseudos .mode, .isa and .uaquad. [HAVE_SH64] (SH64PCREL16_32, SH64PCREL16_64, SH64PCREL16PT_32, SH64PCREL16PT_64, MOVI_IMM_32, MOVI_IMM_64): Define. [HAVE_SH64] (END): Define as 10. [HAVE_SH64] (UNDEF_SH64PCREL, SH64PCREL16, SH64PCREL32, SH64PCREL48, SH64PCREL64, UNDEF_MOVI, MOVI_16, MOVI_32, MOVI_48, MOVI_64): Define. [HAVE_SH64] (SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, SH64PCREL32_F, SH64PCREL32_M, SH64PCREL32_LENGTH, SH64PCREL48_F, SH64PCREL48_M, SH64PCREL48_LENGTH, SH64PCREL64_LENGTH, MOVI_16_LENGTH, MOVI_32_LENGTH, MOVI_48_LENGTH, MOVI_64_LENGTH): Define. (md_relax_table) [HAVE_SH64]: Provide relaxations for SHmedia. (md_begin) [HAVE_SH64]: Call shmedia_md_begin. (parse_reg) [HAVE_SH64]: Parse register names case-insensitive. (md_assemble) [HAVE_SH64]: Call shmedia_md_assemble if assembling SHmedia instructions. Handle state-change after switching to SHcompact. (md_longopts) [HAVE_SH64]: New options --isa=* and --abi=*. (md_parse_option) [HAVE_SH64]: Parse new options. (md_show_usage) [HAVE_SH64]: Show usage of new options. (md_convert_frag) [HAVE_SH64] <default>: Call shmedia_md_convert_frag instead of abort. (sh_force_relocation) [HAVE_SH64]: Also force relocation for BFD_RELOC_SH_SHMEDIA_CODE. (sh_elf_final_processing) [HAVE_SH64]: Set flags identifying SHcompact or SHmedia code. (md_apply_fix) [HAVE_SH64] <default>: Return result from calling shmedia_md_apply_fix instead of abort. (md_estimate_size_before_relax) [HAVE_SH64] <default>: Return result from calling shmedia_md_estimate_size_before_relax instead of calling abort. (sh_do_align) [HAVE_SH64]: If shmedia_mode, let shmedia_do_align do the work. (tc_gen_reloc) [HAVE_SH64]: For unrecognized relocs, call shmedia_init_reloc and do nothing more if it returns non-zero. (sh_finalize) [HAVE_SH64]: Call shmedia_md_end. * po/POTFILES.in: Regenerate. * po/gas.pot: Regenerate.
2002-02-08 14:32:23 +08:00
@cindex SH64 support
@menu
* SH64 Options:: Options
* SH64 Syntax:: Syntax
* SH64 Directives:: SH64 Machine Directives
* SH64 Opcodes:: Opcodes
@end menu
@node SH64 Options
@section Options
@cindex SH64 options
@cindex options, SH64
@table @code
@cindex SH64 ISA options
@cindex ISA options, SH64
@item -isa=shmedia | -isa=shcompact
Specify the default instruction set. @code{SHmedia} specifies the
32-bit opcodes, and @code{SHcompact} specifies the 16-bit opcodes
compatible with previous SH families. The default depends on the ABI
selected; the default for the 64-bit ABI is SHmedia, and the default for
the 32-bit ABI is SHcompact. If neither the ABI nor the ISA is
specified, the default is 32-bit SHcompact.
Note that the @code{.mode} pseudo-op is not permitted if the ISA is not
specified on the command line.
@cindex SH64 ABI options
@cindex ABI options, SH64
@item -abi=32 | -abi=64
Specify the default ABI. If the ISA is specified and the ABI is not,
the default ABI depends on the ISA, with SHmedia defaulting to 64-bit
and SHcompact defaulting to 32-bit.
Note that the @code{.abi} pseudo-op is not permitted if the ABI is not
specified on the command line. When the ABI is specified on the command
line, any @code{.abi} pseudo-ops in the source must match it.
@item -shcompact-const-crange
Emit code-range descriptors for constants in SHcompact code sections.
@item -no-mix
Disallow SHmedia code in the same section as constants and SHcompact
code.
@item -no-expand
Do not expand MOVI, PT, PTA or PTB instructions.
@item -expand-pt32
With -abi=64, expand PT, PTA and PTB instructions to 32 bits only.
@end table
@node SH64 Syntax
@section Syntax
@menu
* SH64-Chars:: Special Characters
* SH64-Regs:: Register Names
* SH64-Addressing:: Addressing Modes
@end menu
@node SH64-Chars
@subsection Special Characters
@cindex line comment character, SH64
@cindex SH64 line comment character
@samp{!} is the line comment character.
@cindex line separator, SH64
@cindex statement separator, SH64
@cindex SH64 line separator
You can use @samp{;} instead of a newline to separate statements.
@cindex symbol names, @samp{$} in
@cindex @code{$} in symbol names
Since @samp{$} has no special meaning, you may use it in symbol names.
@node SH64-Regs
@subsection Register Names
@cindex SH64 registers
@cindex registers, SH64
You can use the predefined symbols @samp{r0} through @samp{r63} to refer
to the SH64 general registers, @samp{cr0} through @code{cr63} for
control registers, @samp{tr0} through @samp{tr7} for target address
registers, @samp{fr0} through @samp{fr63} for single-precision floating
point registers, @samp{dr0} through @samp{dr62} (even numbered registers
only) for double-precision floating point registers, @samp{fv0} through
@samp{fv60} (multiples of four only) for single-precision floating point
vectors, @samp{fp0} through @samp{fp62} (even numbered registers only)
for single-precision floating point pairs, @samp{mtrx0} through
@samp{mtrx48} (multiples of 16 only) for 4x4 matrices of
single-precision floating point registers, @samp{pc} for the program
counter, and @samp{fpscr} for the floating point status and control
register.
You can also refer to the control registers by the mnemonics @samp{sr},
@samp{ssr}, @samp{pssr}, @samp{intevt}, @samp{expevt}, @samp{pexpevt},
@samp{tra}, @samp{spc}, @samp{pspc}, @samp{resvec}, @samp{vbr},
@samp{tea}, @samp{dcr}, @samp{kcr0}, @samp{kcr1}, @samp{ctc}, and
@samp{usr}.
@node SH64-Addressing
@subsection Addressing Modes
@cindex addressing modes, SH64
@cindex SH64 addressing modes
SH64 operands consist of either a register or immediate value. The
immediate value can be a constant or label reference (or portion of a
label reference), as in this example:
@example
movi 4,r2
pt function, tr4
movi (function >> 16) & 65535,r0
shori function & 65535, r0
ld.l r0,4,r0
@end example
@cindex datalabel, SH64
Instruction label references can reference labels in either SHmedia or
SHcompact. To differentiate between the two, labels in SHmedia sections
will always have the least significant bit set (i.e. they will be odd),
which SHcompact labels will have the least significant bit reset
(i.e. they will be even). If you need to reference the actual address
of a label, you can use the @code{datalabel} modifier, as in this
example:
@example
.long function
.long datalabel function
@end example
In that example, the first longword may or may not have the least
significant bit set depending on whether the label is an SHmedia label
or an SHcompact label. The second longword will be the actual address
of the label, regardless of what type of label it is.
Contribute sh64-elf. 2002-02-08 Alexandre Oliva <aoliva@redhat.com> Stephen Clarke <Stephen.Clarke@st.com> * doc/c-sh64.texi: Fix citation of SH64 architecture manual. 2002-01-31 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh.c (md_relax_table): Added default sizes for non-PC-relative UNDEF_MOVI, and relaxation sequences for MOVI_16, MOVI_32 and MOVI_48. * config/tc-sh64.c (shmedia_md_apply_fix3): Fix warning. (shmedia_md_convert_frag): Handle non-PC-relative UNDEF_MOVI and MOVI_16. (shmedia_md_estimate_size_before_relax): Remove redundant blocks. Set fragP->fr_var even if relaxation type unchanged. Retain UNDEF_MOVI until expression decays to number. 2002-01-24 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh64.c (shmedia_init_reloc): Handle new SHmedia PIC relocation types. Take fixP->fx_addnumber into account too. (shmedia_md_apply_fix): Likewise. (shmedia_md_convert_frag): Likewise. (shmedia_build_Mytes): Likewise. (sh64_consume_datalabel): Complain about nested datalabel. Support PIC relocs. Call sh_parse_name. * config/tc-sh64.h (TC_RELOC_RTSYM_LOC_FIXUP): Extend definition in tc-sh.h to SHmedia reloc types. * config/tc-sh.c (SH64PCRELPLT, MOVI_PLT, MOVI_GOTOFF, MOVI_GOTPC): New relaxation constants. (md_relax_table): Introduce relaxation directives for PIC-related constants. (sh_PIC_related_p): Handle datalabel. (sh_check_fixup): Choose SH5 PIC relocations. (sh_cons_fix_new): Added BDF_RELOC_64. (md_apply_fix3, sh_parse_name): Handle GOTPLT. 2002-01-18 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh64.c (sh64_max_mem_for_rs_align_code): If the current ISA is SHmedia, get 7 bytes. 2001-11-28 Nick Clifton <nickc@cambridge.redhat.com> * config/tc-sh.c (md_apply_fix3): Treat shmedia_md_apply_fix3 as a void function. * config/tc-sh64.c (shmedia_apply_fix): Rename to shmedia_apply_fix3 and make void. 2001-05-17 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh64.c (s_sh64_abi): Remove unused arguments passed to as_bad. 2001-04-12 Alexandre Oliva <aoliva@redhat.com> * config/tc-sh64.h (md_parse_name): Take &c as argument. 2001-03-14 DJ Delorie <dj@redhat.com> * doc/Makefile.am (CPU_DOCS): Added c-sh64.texi * doc/Makefile.in(CPU_DOCS): Ditto. * doc/c-sh64.texi: New file. * doc/as.texinfo: Add SH64 support. 2001-03-13 DJ Delorie <dj@redhat.com> * config/tc-sh64.c (shmedia_get_operands): Rename A_RESV_Fx to A_REUSE_PREV so that its purpose is more obvious. (shmedia_build_Mytes): Ditto. 2001-03-07 DJ Delorie <dj@redhat.com> * config/tc-sh64.c (sh64_vtable_entry): New, strip datalabels before processing. (sh64_vtable_inherit): Ditto. (strip_datalabels): New, strip "datalabel" from given line. * config/tc-sh.c (md_pseudo_table): Add sh64-specific vtable pseudos. 2001-03-06 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_assemble): Move dwarf2_emit_insn call ... (shmedia_build_Mytes): ... to here. 2001-03-06 DJ Delorie <dj@redhat.com> * config/tc-sh.c: Remove sh64-specific uaquad now that there is a generic one. 2001-01-21 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.h (DWARF2_LINE_MIN_INSN_LENGTH): Override. * config/tc-sh64.c (shmedia_md_assemble): Offset recorded insn address by one in call to dwarf2_emit_insn. 2001-01-13 Hans-Peter Nilsson <hpn@cygnus.com> Implement ".abi" pseudo and correct .cranges descriptors. Correct alignment handling broken by imported changes. * config/tc-sh64.h (HANDLE_ALIGN): Override definition in tc-sh.h. (sh64_handle_align): Declare. (MAX_MEM_FOR_RS_ALIGN_CODE): Override definition in tc-sh.h. (sh64_max_mem_for_rs_align_code): Declare. (enum sh64_isa_values): Moved here from tc-sh64.c. (md_do_align): Define. (sh64_do_align): Declare. (struct sh64_tc_frag_data): New. (TC_FRAG_TYPE): Change to struct sh64_tc_frag_data. Users changed. (TC_FRAG_INIT): Change to set new datatype. (struct sh64_segment_info_type): Rename member last_flushed_location to last_contents_mark. All users changed. (md_elf_section_change_hook, TC_CONS_FIX_NEW): Do not define. (shmedia_elf_new_section, sh64_tc_cons_fix_new): Do not prototype. * config/tc-sh.c (md_pseudo_table): Add ".abi". (sh_elf_cons) [HAVE_SH64]: Call sh64_update_contents_mark instead of unsetting seen_insn. (md_assemble) [HAVE_SH64] <before new SHcompact sequence>: Also call sh64_update_contents_mark. (sh_handle_align): Remove HAVE_SH64-conditioned code. * config/tc-sh64.c (sh64_isa_mode): Correct type from boolean to enum sh64_isa_values. (sh64_set_contents_type): Drop segT parameter. All callers changed. (emitting_crange): Boolean guard moved to file scope from function scope in sh64_set_contents_type. (s_sh64_abi): New. (sh64_update_contents_mark): New; most split out from sh64_flush_pending_output. (shmedia_md_end): Call sh64_update_contents_mark. Set sh64_isa_mode to sh64_isa_sh5_guard unless sh64_isa_unspecified. (sh64_do_align): New function. (sh64_max_mem_for_rs_align_code): New function. (sh64_handle_align): Rename from shmedia_do_align. Make non-static. Add head comment. Emit zero bytes for n bytes modulo four. Change return-type to void. (shmedia_elf_new_section): Remove. (shmedia_md_assemble): Call sh64_update_contents_mark. (s_sh64_mode): Ditto. Do not call md_flush_pending_output. Make new frag. Call sh64_update_contents_mark after making the new frag. (sh64_flush_pending_output): Just call sh64_update_contents_mark and sh_flush_pending_output. (sh64_flag_output): Also call md_flush_pending_output, but add condition on not emitting_crange. (sh64_tc_cons_fix_new): Remove. 2001-01-12 Nick Clifton <nickc@redhat.com> * config/tc-sh64.c (shmedia_do_align): Fix to work with new alignment handling scheme imported from sourceware. 2001-01-12 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.h (TARGET_FORMAT): Define. (sh64_target_format): Prototype. * config/tc-sh64.c (sh64_target_mach): New function. 2001-01-07 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_end): When equating a symbol, use zero_address_frag instead of copying the frag of the symbol. (shmedia_frob_file_before_adjust): Ditto. (shmedia_md_apply_fix) <case BFD_RELOC_SH_IMM_MEDLOW16>: Cast mask to valueT to remove signedness. (shmedia_md_convert_frag): Add parameter final. Rename parameter headers to output_bfd. Do not evaluate symbols if final is false; do emit fixups. (shmedia_md_estimate_size_before_relax) <case C (MOVI_IMM_32, UNDEF_MOVI) et al>: If symbol cannot be modified to be PC-relative to the current frag, call shmedia_md_convert_frag to emit fixups and make frag_wane neutralize the frag. Update comments. * config/tc-sh.c (md_convert_frag): Change caller of shmedia_md_convert_frag. 2001-01-06 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.h: Tweak comments and correct formatting. * config/tc-sh64.c: Ditto. (shmedia_md_convert_frag) <PT/PTA/PTB 32, 48 and 64 bit expansion, MOVI pcrel expansion>: Fix thinko calculating offset for the no-relocation case. (shmedia_check_limits): Fix range check being off-by-one for PTA. * config/tc-sh.c: Ditto. Add proper comments to #ifdef/#ifndef wrappers. (SH64PCREL16_F): Increment for proper max-PTA handling. Update comment. (SH64PCREL16_M, MOVI_16_M): Correct range thinko. (SH64PCREL48_M, MOVI_48_M): Similar; don't count in length of expansion. (SH64PCREL32_M, MOVI_32_M): Ditto; handle overflowing expression. Correct comment. 2001-01-05 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_apply_fix) <second switch, case BFD_RELOC_SH_PT_16>: Set lowest bit in field to be relocated to 1. (shmedia_md_convert_frag) <case C (SH64PCREL16_32, SH64PCREL16) et al>: Set lowest bit of field to relocate to 1 and rest to empty, if reloc is emitted. 2000-12-31 Hans-Peter Nilsson <hpn@cygnus.com> New options plus bugfixes. * config/tc-sh.c (md_longopts): New options "-no-expand" and "-expand-pt32". (md_parse_option): Handle new options. (md_show_usage): Add blurb for new options. * config/tc-sh64.c (SHMEDIA_BFD_RELOC_PT): New macro. (sh64_expand, sh64_pt32): New variables. (shmedia_init_reloc): Handle BFD_RELOC_SH_PT_16. (shmedia_md_apply_fix): Hold original fixP->fx_r_type in orig_fx_r_type. Change SHMEDIA_BFD_RELOC_PT into BFD_RELOC_SH_PT_16. Handle BFD_RELOC_SH_PT_16 as pc-relative. <resolved previously-pc-relative relocs>: Handle SHMEDIA_BFD_RELOC_PT and BFD_RELOC_SH_PT_16. (shmedia_md_convert_frag) <case C (SH64PCREL16PT_64, SH64PCREL16), case C (SH64PCREL16PT_32, SH64PCREL16)>: Modify to PTB if operand points to SHcompact code. <case C (SH64PCREL16_32, SH64PCREL16), case C (SH64PCREL16_64, SH64PCREL16)>: Check that ISA of what operand points at and PTA/PTB matches, or emit error. (shmedia_check_limits): Handle BFD_RELOC_SH_PT_16 and SHMEDIA_BFD_RELOC_PT. (shmedia_immediate_op): If pcrel, emit fixup also for constant operand. (shmedia_build_Mytes) <case A_IMMS16>: Also check sh64_expand in condition for MOVI expansion. <case A_PCIMMS16BY4>: Handle expansion to 32 bits only, if sh64_pt32. Emit only a BFD_RELOC_SH_PT_16 fixup if not sh64_expand. <case A_PCIMMS16BY4_PT>: Likewise, but emit a SHMEDIA_BFD_RELOC_PT fixup. (sh64_target_format): Error-check setting of sh64_pt32 and sh64_expand. Fix typo in check for sh64_shcompact_const_crange. (shmedia_md_pcrel_from_section): Handle BFD_RELOC_SH_PT_16 and SHMEDIA_BFD_RELOC_PT as coming from SHmedia code. 2000-12-31 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c: Improve comments. (shmedia_md_convert_frag): Remove inactive is_pt_variant code. Do not say the linker will check correctness of PTA/PTB expansion. (shmedia_md_end): Make non-static. * config/tc-sh64.h (md_end): Define to shmedia_md_end. Add prototype. * config/tc-sh.c (sh_finalize): Remove. * config/tc-sh.h (md_end): Do not define. Remove prototype for sh_finalize. 2000-12-30 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_frob_section_type): Use a struct sh64_section_data container when storing section type in tdata field in elf_section_data. * config/tc-sh.c (sh_elf_final_processing): Change from EF_SH64 to EF_SH5. * Makefile.am: Update dependencies. * Makefile.in: Regenerate. 2000-12-22 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_assemble): Don't protect dwarf2_emit_insn call with test on debug_type. 2000-12-19 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (sh64_set_contents_type): Make contents-type CRT_SH5_ISA32 sticky for 64-bit. 2000-12-18 Hans-Peter Nilsson <hpn@cygnus.com> Generate .crange sections when switching ISA mode or emitting constants in same section as code. * config/tc-sh64.c: Reformat structure definitions. (sh64_end_of_assembly, sh64_mix, sh64_shcompact_const_crange): New variables. (sh64_set_contents_type): Rename from sh64_init_section. Rewrite to emit a .cranges descriptor when contents type changes. Only emit error if changing contents type and -no-mix is in effect. (sh64_emit_crange, sh64_flush_last_crange, sh64_flag_output, sh64_flush_pending_output, sh64_tc_cons_fix_new): New functions. (shmedia_md_end): Set sh64_end_of_assembly. Pass sh64_flush_last_crange over sections. When checking main symbol of datalabel symbol, check for STO_SH5_ISA32, not ISA type of section in definition. (shmedia_frob_file_before_adjust): Check main symbol for STO_SH5_ISA32; don't check ISA type of section in definition. (shmedia_frob_section_type): Adjust for .cranges; set section flag to SHF_SH5_ISA32_MIXED or SHF_SH5_ISA32 according to whether .cranges entries have been output. (shmedia_elf_new_section): Just call md_flush_pending_output. (shmedia_md_assemble): Do not emit a BFD_RELOC_SH_SHMEDIA_CODE fix. Do not set tc_segment_info_data.in_code for section. Call sh64_set_contents_type for SHmedia code. (s_sh64_mode): Do not call sh64_init_section or set seen_insn to false. Call md_flush_pending_output. (sh64_target_format): Check that -no-mix and -shcompact-const-crange are used in sane combination with other options. (shmedia_md_pcrel_from_section): Check type of fix for how to adjust pc-relative. (sh64_consume_datalabel): Check symbol for having STO_SH5_ISA32, not ISA type of section in definition. * config/tc-sh64.h (struct sh64_segment_info_type): Rewrite to hold contents-type state. (md_flush_pending_output): Redefine to sh64_flush_pending_output. (sh64_flush_pending_output): Declare. (TC_CONS_FIX_NEW): Define to sh64_tc_cons_fix_new. (sh64_tc_cons_fix_new): Declare. * config/tc-sh.c (sh_elf_cons) [HAVE_SH64]: Unset seen_insn and call sh64_flag_output. (md_assemble) [HAVE_SH64]: Do not emit BFD_RELOC_SH_CODE. Just call sh64_set_contents_type to mark SHcompact code and set seen_insn. (md_longopts): New options "-no-mix" and "-shcompact-const-crange". (md_parse_option): Handle new options. (md_show_usage): Add blurb for new options. (md_number_to_chars) [HAVE_SH64]: Call sh64_flag_output. 2000-12-15 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c: Delete investigated and obsolete fixme:s. (sh64_last_insn_frag): New. (shmedia_md_convert_frag): Use tc_frag_data field of incoming frag to get frag for insn opcode for generating fixups; do not assume it is the same frag. (shmedia_build_Mytes): Set sh64_last_insn_frag after growing frag for new insn. * config/tc-sh64.h (ELF_TC_SPECIAL_SECTIONS): Define for .cranges section. (TC_FRAG_TYPE): Define as fragS *. (TC_FRAG_INIT): Define to set tc_frag_data to sh64_last_insn_frag. (sh64_last_insn_frag): Declare. (sh64_consume_datalabel): Fix typo; check for seginfo != NULL, not == NULL before dereferencing. 2000-12-12 Hans-Peter Nilsson <hpn@cygnus.com> Get rid of BFD section flag and EF_SH64_ABI64. * config/tc-sh64.c (shmedia_frob_section_type): Use elf_section_data (sec)->tdata, not a specific BFD section flag, to communicate the section as containing SHmedia code. Describe why. * config/tc-sh.c (sh_elf_final_processing): Tweak comment. Set EF_SH64 regardless of ABI. * config/tc-sh64.c (shmedia_md_apply_fix): Decapitalize "invalid" in error message. Handle resolved expressions for BFD_RELOC_SH_IMMS10, BFD_RELOC_SH_IMMS10BY2, BFD_RELOC_SH_IMMS10BY4 and BFD_RELOC_64. (shmedia_check_limits): Handle BFD_RELOC_64. (sh64_adjust_symtab): Do not decrement the GAS symbol value for a STO_SH5_ISA32 symbol, only the BFD value. 2000-12-11 Ben Elliston <bje@redhat.com> * config/tc-sh64.c: Call dwarf2_emit_insn, not the defunct dwarf2_generate_asm_lineno. 2000-12-11 Hans-Peter Nilsson <hpn@cygnus.com> Handle PC-relative MOVI expansions with assembler relaxation. Generate PC-relative relocs from 16-bit PC-relative expressions. * config/tc-sh64.c (SHMEDIA_MD_PCREL_FROM_FIX): Break out from... (shmedia_md_pcrel_from_section): ...here. (shmedia_md_apply_fix): Handle fixups for 16-bit operands that has turned completely resolved. Adjust relocation type for 16-bit immediate operands that has turned PC-relative. Adjust back for MD_PCREL_FROM_SECTION being applied twice. (shmedia_md_convert_frag): Always emit reloc for expression with global or weak symbol. Handle relaxation result for PC-relative expressions. (shmedia_md_estimate_size_before_relax): An expression with a weak or global symbol can not be relaxed. Break out tests for relaxable symbol into variable sym_relaxable. <cases C (MOVI_IMM_64, UNDEF_MOVI) and C (MOVI_IMM_32, UNDEF_MOVI)>: Break out any PC-relative expression and change relaxation type. (shmedia_build_Mytes): CSE &operands->operands[j] into variable opjp. <case A_IMMS16>: Fix typo for initial minor relaxation type of MOVI expansion. If X_op_symbol of the immediate expression is set, make an expression symbol for the argument to frag_var. * config/tc-sh.c (MOVI_IMM_32_PCREL, MOVI_IMM_64_PCREL): New relaxations. (END): Adjust for new relaxations. (md_relax_table): Add entries for new relaxations. 2000-12-07 Ben Elliston <bje@redhat.com> * config/tc-sh64.c (shmedia_parse_reg): Initialize variable len. 2000-12-07 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_convert_frag): Correct all MOVI and SHORI operand offsets in PT/PTA/PTB expansions. 2000-12-05 Hans-Peter Nilsson <hpn@cygnus.com> Implement DataLabel semantics. * config/tc-sh.c (sh_frob_file) [HAVE_SH64]: Call shmedia_frob_file_before_adjust. * config/tc-sh64.c [! OBJ_ELF]: Emit #error. (DATALABEL_SUFFIX): Define. (shmedia_md_end) <before adjusting STO_SH5_ISA32 symbols>: Walk symbol list to update "datalabel" symbols to their main symbol counterparts. (shmedia_frob_file_before_adjust): New. (sh64_adjust_symtab): For remaining datalabel symbols, set to undefined and set STT_DATALABEL. (sh64_frob_label): Initialize TC symbol field. (sh64_consume_datalabel): Actually implement semantics. New parameter operandf, call it instead of expression. (sh64_exclude_symbol): New. * config/tc-sh64.h (md_parse_name): Pass on the function operand to sh64_consume_datalabel. (tc_symbol_new_hook): Define to tc_frob_symbol. (TC_SYMFIELD_TYPE): Define to symbolS *. (tc_frob_symbol): Define to call sh64_exclude_symbol. 2000-12-01 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_init_reloc): Tweak comment for default case. (shmedia_md_assemble): Call dwarf2_generate_asm_lineno if generating dwarf2 debug information. 2000-11-30 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (sh64_target_format): Use elf64-sh64l and elf64-sh64 for the 64-bit ABI. * config/tc-sh.c (md_show_usage): Tweak usage output for -abi=* option. 2000-11-29 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh.c: Remove conditionalizing on HAVE_SH64 for case-insensitivity. 2000-11-27 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c: Tweak comments, formatting and error messages. (enum sh64_abi_values): New type. (enum sh64_isa_values): New type. (sh64_isa_mode): Replace shmedia_mode. All referers changed. (seen_shcompact_mode, seen_shmedia_mode): Delete. (sh64_abi): Replace shmedia_64. (shmedia_md_convert_frag) <C (MOVI_IMM_64, MOVI_64), C (MOVI_IMM_32, MOVI_32)>: Correct register number handling. (s_sh64_mode): Check validity for this target. (sh64_target_format): Initialize defaults for ISA and ABI. Fallback to old object format if no SH64 ISA or ABI has been specified. * config/tc-sh.c (md_parse_option): Check combinations for errors. (sh_elf_final_processing): Change to have EF_SH64_ABI64 for 64-bit ABI and EF_SH64 for 32-bit ABI, if SH64 options are specified. * config/tc-sh64.h: Fix typo in comment. 2000-11-25 Hans-Peter Nilsson <hpn@cygnus.com> * config/tc-sh64.c (shmedia_md_estimate_size_before_relax) <PT fixups for absolute values>: Size will be longest, not shortest. (shmedia_md_convert_frag): Disable PTB-warning machinery. Correct all MOVI and SHORI operand offsets in PT/PTA/PTB expansions. * config/tc-sh.c (parse_reg) [HAVE_SH64]: Add local variables l0 and l1 to hold lowercase of two first characters. Change all remaining TO_LOWER to tolower. * config/tc-sh64.c (TO_LOWER): Delete. (shmedia_find_cooked_opcode): Use tolower, not TO_LOWER. (md_parse_name): Define. (sh64_consume_datalabel): Declare. (DOLLAR_DOT): Define. * config/tc-sh64.c (shmedia_parse_exp): New. (sh64_consume_datalabel): New; just ignoring datalabel semantics. (shmedia_parse_reg): Remove const from src parameter. (shmedia_get_operands): Ditto for args parameter and ptr variable. (shmedia_md_assemble): Ditto for op_end variable. (shmedia_get_operand): Ditto for ptr parameter and src variable. Use shmedia_parse_exp, not parse_exp. * config/tc-sh64.c (shmedia_parse_reg): Add shmedia_arg_type parameter. All callers changed. (shmedia_get_operand): Add shmedia_arg_type parameter. All callers changed. (shmedia_parse_reg): Put first two character in local variables. Use tolower, not TO_LOWER. If no register is found and argtype indicates a control register, scan shmedia_creg_table case-insensitive. 2000-11-24 Hans-Peter Nilsson <hpn@cygnus.com> * Makefile.am (CPU_TYPES): Add sh64. (TARGET_CPU_CFILES): Add config/tc-sh64.c. (TARGET_CPU_HFILES): Add config/tc-sh64.h. Regenerate dependencies. * Makefile.in: Regenerate. * configure.in: Add support for sh64-*-elf*. * configure: Regenerate. * config/tc-sh64.h: New. * config/tc-sh64.c: New. * config/tc-sh.c (md_pseudo_table) [HAVE_SH64]: New pseudos .mode, .isa and .uaquad. [HAVE_SH64] (SH64PCREL16_32, SH64PCREL16_64, SH64PCREL16PT_32, SH64PCREL16PT_64, MOVI_IMM_32, MOVI_IMM_64): Define. [HAVE_SH64] (END): Define as 10. [HAVE_SH64] (UNDEF_SH64PCREL, SH64PCREL16, SH64PCREL32, SH64PCREL48, SH64PCREL64, UNDEF_MOVI, MOVI_16, MOVI_32, MOVI_48, MOVI_64): Define. [HAVE_SH64] (SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, SH64PCREL32_F, SH64PCREL32_M, SH64PCREL32_LENGTH, SH64PCREL48_F, SH64PCREL48_M, SH64PCREL48_LENGTH, SH64PCREL64_LENGTH, MOVI_16_LENGTH, MOVI_32_LENGTH, MOVI_48_LENGTH, MOVI_64_LENGTH): Define. (md_relax_table) [HAVE_SH64]: Provide relaxations for SHmedia. (md_begin) [HAVE_SH64]: Call shmedia_md_begin. (parse_reg) [HAVE_SH64]: Parse register names case-insensitive. (md_assemble) [HAVE_SH64]: Call shmedia_md_assemble if assembling SHmedia instructions. Handle state-change after switching to SHcompact. (md_longopts) [HAVE_SH64]: New options --isa=* and --abi=*. (md_parse_option) [HAVE_SH64]: Parse new options. (md_show_usage) [HAVE_SH64]: Show usage of new options. (md_convert_frag) [HAVE_SH64] <default>: Call shmedia_md_convert_frag instead of abort. (sh_force_relocation) [HAVE_SH64]: Also force relocation for BFD_RELOC_SH_SHMEDIA_CODE. (sh_elf_final_processing) [HAVE_SH64]: Set flags identifying SHcompact or SHmedia code. (md_apply_fix) [HAVE_SH64] <default>: Return result from calling shmedia_md_apply_fix instead of abort. (md_estimate_size_before_relax) [HAVE_SH64] <default>: Return result from calling shmedia_md_estimate_size_before_relax instead of calling abort. (sh_do_align) [HAVE_SH64]: If shmedia_mode, let shmedia_do_align do the work. (tc_gen_reloc) [HAVE_SH64]: For unrecognized relocs, call shmedia_init_reloc and do nothing more if it returns non-zero. (sh_finalize) [HAVE_SH64]: Call shmedia_md_end. * po/POTFILES.in: Regenerate. * po/gas.pot: Regenerate.
2002-02-08 14:32:23 +08:00
@node SH64 Directives
@section SH64 Machine Directives
In addition to the SH directives, the SH64 provides the following
directives:
@cindex SH64 machine directives
@cindex machine directives, SH64
@table @code
@item .mode [shmedia|shcompact]
@itemx .isa [shmedia|shcompact]
Specify the ISA for the following instructions (the two directives are
equivalent). Note that programs such as @code{objdump} rely on symbolic
labels to determine when such mode switches occur (by checking the least
significant bit of the label's address), so such mode/isa changes should
always be followed by a label (in practice, this is true anyway). Note
that you cannot use these directives if you didn't specify an ISA on the
command line.
@item .abi [32|64]
Specify the ABI for the following instructions. Note that you cannot use
this directive unless you specified an ABI on the command line, and the
ABIs specified must match.
@item .uaquad
Like .uaword and .ualong, this allows you to specify an intenionally
unaligned quadword (64 bit word).
@end table
@node SH64 Opcodes
@section Opcodes
@cindex SH64 opcode summary
@cindex opcode summary, SH64
@cindex mnemonics, SH64
@cindex instruction summary, SH64
For detailed information on the SH64 machine instruction set, see
@cite{SuperH 64 bit RISC Series Architecture Manual} (SuperH, Inc.).
@code{@value{AS}} implements all the standard SH64 opcodes. In
addition, the following pseudo-opcodes may be expanded into one or more
alternate opcodes:
@table @code
@item movi
If the value doesn't fit into a standard @code{movi} opcode,
@code{@value{AS}} will replace the @code{movi} with a sequence of
@code{movi} and @code{shori} opcodes.
@item pt
This expands to a sequence of @code{movi} and @code{shori} opcode,
followed by a @code{ptrel} opcode, or to a @code{pta} or @code{ptb}
opcode, depending on the label referenced.
@end table